function showMenu(s){
	document.getElementById(s + '').style.display = 'block';
	if(document.getElementById(s + '-link').className != 'active') {
		document.getElementById(s + '-link').className = 'selected';
	}
}
function hideMenu(s){
	document.getElementById(s + '').style.display = 'none';
	if(document.getElementById(s + '-link').className != 'active') {
		document.getElementById(s + '-link').className = '';
	}
}